Add tmpfs

Signed-off-by: Josh Curl <josh@curl.me>

Author: joshwget

config/types.go

@@ -57,6 +57,7 @@ type ServiceConfigV1 struct {
 	StdinOpen     bool                 `yaml:"stdin_open,omitempty"`
 	SecurityOpt   []string             `yaml:"security_opt,omitempty"`
 	StopSignal    string               `yaml:"stop_signal,omitempty"`
+	Tmpfs         yaml.Stringorslice   `yaml:"tmpfs,omitempty"`
 	Tty           bool                 `yaml:"tty,omitempty"`
 	User          string               `yaml:"user,omitempty"`
 	VolumeDriver  string               `yaml:"volume_driver,omitempty"`
@@ -116,6 +117,7 @@ type ServiceConfig struct {
 	SecurityOpt   []string             `yaml:"security_opt,omitempty"`
 	ShmSize       yaml.StringorInt     `yaml:"shm_size,omitempty"`
 	StopSignal    string               `yaml:"stop_signal,omitempty"`
+	Tmpfs         yaml.Stringorslice   `yaml:"tmpfs,omitempty"`
 	VolumeDriver  string               `yaml:"volume_driver,omitempty"`
 	Volumes       *yaml.Volumes        `yaml:"volumes,omitempty"`
 	VolumesFrom   []string             `yaml:"volumes_from,omitempty"`

docker/service/convert.go

@@ -234,6 +234,11 @@ func Convert(c *config.ServiceConfig, ctx project.Context, clientFactory compose
 		}
 	}
 
+	tmpfs := map[string]string{}
+	for _, path := range c.Tmpfs {
+		tmpfs[path] = ""
+	}
+
 	hostConfig := &container.HostConfig{
 		VolumesFrom: volumesFrom,
 		CapAdd:      strslice.StrSlice(utils.CopySlice(c.CapAdd)),
@@ -256,6 +261,7 @@ func Convert(c *config.ServiceConfig, ctx project.Context, clientFactory compose
 		RestartPolicy:  *restartPolicy,
 		ShmSize:        int64(c.ShmSize),
 		SecurityOpt:    utils.CopySlice(c.SecurityOpt),
+		Tmpfs:          tmpfs,
 		VolumeDriver:   c.VolumeDriver,
 		Resources:      resources,
 	}

docker/service/convert_test.go

@@ -2,6 +2,7 @@ package service
 
 import (
 	"path/filepath"
+	"reflect"
 	"testing"
 
 	"github.com/docker/libcompose/config"
@@ -90,3 +91,16 @@ func TestStopSignal(t *testing.T) {
 
 	assert.Equal(t, "SIGTERM", cfg.StopSignal)
 }
+
+func TestTmpfs(t *testing.T) {
+	ctx := &ctx.Context{}
+	sc := &config.ServiceConfig{
+		Tmpfs: yaml.Stringorslice{"/run"},
+	}
+	_, hostCfg, err := Convert(sc, ctx.Context, nil)
+	assert.Nil(t, err)
+
+	assert.True(t, reflect.DeepEqual(map[string]string{
+		"/run": "",
+	}, hostCfg.Tmpfs))
+}